I just picked up your email and thought I would respond here and will send you an email directly also.
The latest (and final!) USB driver chip we are using is the MCP2200 NOT the FTDI chip. If you have the FTDI installed, that is fine -- it shouldn't interfere with anything. You will want to install the driver for the MCP2200 chip -- by installing the file found on our website on the downloads page:
Support for UnwiredTools Products
The link to the file itself is here:
http://unwiredtools.com/download/mcp2200.inf
Frank
UT